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//CHAPTER 11- SINGLE PHASE INDUCTION MOTOR
//Examle 1
disp("CHAPTER 11");
disp("EXAMPLE 1");
//VARIABLE INITIALIZATION
P=6; //number of poles
f=50; //frequency in Hz
pow_fd=160; //gross power absorbed by forward field in W
pow_bd=20; //gross power absorbed by backward field in W
N_r=950; //rotor speed in rpm
loss=75; //no load frictional loss in W
//SOLUTION
P_g=pow_fd-pow_bd; //air-gap power
N_s=(120*f)/P; //synchronous speed
S=(N_s-N_r)/N_s; //slip
P_m=P_g*(1-S); //mechanical power
P_o=P_m-loss; //output or shaft power
w=(2*%pi*N_r)/60;
T=P_o/w;
disp(sprintf("The shaft torque is %f N-m",T));
//END
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